journal
MENU ▼
Read by QxMD icon Read
search

Journal of Computer Assisted Tomography

journal
https://www.readbyqxmd.com/read/28045757/left-colonic-bleeding-secondary-to-inferior-mesenteric-vein-stenosis
#1
Thang Q Le, Donald Romanelli
Lower gastrointestinal bleeding is most commonly associated with diverticulosis, ischemic colitis, vascular ectasia, and anorectal disease and less commonly associated with colonic malignancy. Infrequently, it is associated with mesenteric varices, a rare etiology that is not well documented in the radiology literature. We present a case of a 50-year-old man diagnosed as having intermittent left colonic bleeding from mesenteric varices due to a critical stenosis at the portal vein-inferior mesenteric vein confluence...
December 29, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28045756/influence-of-age-on-healing-capacity-of-acute-tears-of-the-anterior-cruciate-ligament-based-on-magnetic-resonance-imaging-assessment
#2
Hidetoshi Ihara, Tsutomu Kawano
OBJECTIVE: The purpose of this study was to evaluate the influence of patient age on the effects of conservative treatment of the anterior cruciate ligament (ACL). METHODS: A total of 102 consecutive patients with acute ACL injury were allowed to heal without surgery. Final magnetic resonance imaging images of the ACL were classified from grade I, indicating good morphological recovery, to grade IV, indicating poor recovery. Chi-square analysis was used to determine significant differences in the incidence of grades I and II among those less than 20 versus those 20 years or more of age...
December 29, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27879529/morphometric-study-of-the-vestibular-aqueduct-in-patients-with-enlarged-vestibular-aqueduct
#3
Huiying Lyu, Keguang Chen, Youzhou Xie, Lin Yang, Tianyu Zhang, Peidong Dai
OBJECTIVE: To test whether there are significant differences in the morphologic features of the enlarged vestibular aqueduct (EVA) and its anatomic relationships with adjacent structures between EVA patients with and without other inner ear malformations. METHODS: The morphology of vestibular aqueduct, volume of vestibule, and anatomic location of facial nerve (FN) were compared among 3 groups. Group A, 18 control subjects; group B, 32 EVA patients without other inner ear malformations; group C, 14 EVA patients with other inner ear malformations...
December 23, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27879528/low-tube-voltage-computed-tomography-during-hepatic-arterial-phase-the-effect-of-body-habitus-on-image-quality
#4
Yang Shin Park, Chang Hee Lee, Jongmee Lee, Jae Woong Choi, Kyeong Ah Kim, Cheol Min Park
PURPOSE: This study aimed to evaluate the impact of body habitus factors on image quality of low-tube voltage computed tomography (CT) during the hepatic arterial phase. MATERIALS AND METHODS: Ninety-seven patients (66 men, 31 women; age range, 26-78 years) who underwent clinically indicated liver dynamic CT examination were enrolled in the study. Analysis with 80-kVp CT and intermediate tube current (277-337 mA) was performed in the late hepatic arterial phase using a 320-detector row scanner with adaptive iterative dose reduction 3-dimensional reconstruction...
December 23, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27879527/support-vector-machines-model-of-computed-tomography-for-assessing-lymph-node-metastasis-in-esophageal-cancer-with-neoadjuvant-chemotherapy
#5
Zhi-Long Wang, Zhi-Guo Zhou, Ying Chen, Xiao-Ting Li, Ying-Shi Sun
OBJECTIVE: The aim of this study was to diagnose lymph node metastasis of esophageal cancer by support vector machines model based on computed tomography. MATERIALS AND METHODS: A total of 131 esophageal cancer patients with preoperative chemotherapy and radical surgery were included. Various indicators (tumor thickness, tumor length, tumor CT value, total number of lymph nodes, and long axis and short axis sizes of largest lymph node) on CT images before and after neoadjuvant chemotherapy were recorded...
December 23, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27879526/diagnostic-computed-tomography-coregistration-with-in-111-dtpa-octreotide-single-photon-emission-tomography-low-dose-computed-tomography
#6
Sagi Tshori, Moshe Bocher, Bella Yuzefovich, Rina Rubinstein, David J Gross, Merav Fraenkel, Yodphat Krausz
OBJECTIVES: In-111-DTPA-octreotide (OctreoScan) is still pivotal for neuroendocrine tumor imaging, despite the introduction of Ga-68-octreotide tracers. Low-dose computed tomography (LDCT) assists in the localization of SPECT findings but often results in uncertain interpretation. This retrospective study evaluates the impact of coregistration of In-111-DTPA-octreotide SPECT/LDCT with diagnostic CT on interpretation. METHODS: Thirty-five consecutive studies, in which coregistration was performed because of uncertain interpretation, were evaluated...
December 23, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27997443/automated-infarct-core-volumetry-within-the-hypoperfused-tissue-technical-implementation-and-evaluation
#7
Elias Kellner, Marco Reisert, Valerij G Kiselev, Christoph J Maurer, Lena-Alexandra Beume, Horst Urbach, Karl Egger
OBJECTIVE: The aim of this study was to develop a rapid and fully automatic infarct core and tissue at risk volumetry approach in acute ischemic stroke. METHODS: We evaluated an algorithm in which segmentation was restricted to 1 hemisphere and the potential lesion characterized on the basis of the perfusion parameter Tmax with a region-wise comparison of local histograms to its mirrored counterpart. RESULTS: We applied the "Tmax inside" method to 30 cases of a public data set with ground-truth segmentations for diffusion-weighted and perfusion magnetic resonance imaging...
December 15, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27997442/intrasession-and-intersession-repeatability-of-diffusion-tensor-imaging-in-healthy-human-liver
#8
Oi Lei Wong, Thomas Wai Tong Leung, Gladys Goh Lo, Jing Yuan, Wing Wa Li, Michael D Noseworthy
OBJECTIVE: The aim of this study was to evaluate the effect of signal to noise ratio (SNR) and number of gradient directions (NGD) on intra- and intersession repeatability of liver diffusion tensor imaging (DTI) metrics. METHODS: At each of 3 liver DTI scan sessions, liver diffusion was assessed in 5 healthy volunteers using a 6-direction DTI scan performed 9 separate times (ie, number of signal averages [NSA]). In addition, 4 combinations of NSA and NGD were acquired (NSA/NGD = 1/30, 3/10, 3/12, and 5/6) to determine the combined effect to DTI metrics, which was based on intersubject variability and intrasession (Vintra) and intersession (Vinter) repeatability...
December 15, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27997441/fatal-congenital-retroperitoneal-neuroblastoma-diagnosed-by-fetal-magnetic-resonance-imaging
#9
Elizabeth Snyder, Angie C Jelin, Thierry A G M Huisman, Jody E Hooper, Aylin Tekes
Congenital extra-adrenal neuroblastoma is a rare condition, which typically has a favorable prognosis. We present a unique case of extra-adrenal retroperitoneal neuroblastoma diagnosed by fetal magnetic resonance imaging, which ultimately leads to fetal hydrops and neonatal death.
December 15, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27997440/intravoxel-incoherent-motion-diffusion-weighted-magnetic-resonance-imaging-of-cervical-cancer-with-different-b-values
#10
Qingxia Wu, Yan Wang, Ligang Shi, Li Dong, Mingbo Liu, Shewei Dou, Shaocheng Zhu, Meiyun Wang, Dapeng Shi
OBJECTIVE: The aims of this study were to evaluate the dependence of diffusion parameters on the b values adopted for intravoxel incoherent motion diffusion-weighted magnetic resonance imaging and to investigate the application value of multiple diffusion parameters obtained from monoexponential and biexponential models in subjects with a normal cervix and in cervical cancer patients. METHODS: A total of 120 female patients with cervical cancer and 21 female control subjects with a normal cervix underwent diffusion-weighted magnetic resonance imaging with 13 b values (0-2000 s/mm) at 3 T...
December 15, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27997439/structural-and-functional-correlates-of-myocardial-t1-mapping-in-321-patients-with-hypertrophic-cardiomyopathy
#11
Linda C Chu, Celia P Corona-Villalobos, Marc K Halushka, Yan Zhang, Chiara Pozzessere, Ihab R Kamel, Iraklis Pozios, Rob J Van Der Geest, Neville Gai, Roselle M Abraham, Theodore P Abraham, David A Bluemke, Stefan L Zimmerman
OBJECTIVE: The aim of this study was to evaluate the structural and functional correlates of T1 mapping in 321 patients with hypertrophic cardiomyopathy (HCM). METHODS: Three hundred twenty-one patients with HCM who underwent cardiac magnetic resonance from 2003 to 2013 were retrospectively identified from our institution's HCM registry. Left ventricular volume, function, late gadolinium enhancement (LGE), and Look-Locker T1 time were quantified. T1 time was normalized to blood pool to calculate T1 ratio...
December 15, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27997438/diffusion-weighted-imaging-for-differentiating-uterine-leiomyosarcoma-from-degenerated-leiomyoma
#12
Hai Ming Li, Jia Liu, Jin Wei Qiang, Hao Zhang, Guo Fu Zhang, FengHua Ma
PURPOSE: The study aimed to investigate magnetic resonance diffusion-weighted imaging (DWI) in the differentiation of uterine leiomyosarcoma (ULMS) from degenerated leiomyoma (DLM). METHODS: Sixteen patients with ULMSs and 26 patients with DLMs confirmed by surgery and pathology underwent conventional magnetic resonance imaging and DWI. The mean apparent diffusion coefficient (ADC) values of the 2 groups' tumors were measured and compared using an independent-sample t test (b = 0...
December 15, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27893493/improving-detection-of-iron-deposition-in-cirrhotic-liver-using-susceptibility-weighted-imaging-with-emphasis-on-histopathological-correlation
#13
Ruo-Kun Li, Meng-Su Zeng, Fu-Hua Yan, Jin-Wei Qiang, Suzanne L Palmer, Frank Chen, Sheng-Xiang Rao, Ling-Li Chen, Yong-Ming Dai
OBJECTIVE: The aim of this study was to investigate the value of susceptibility-weighted imaging (SWI) for detection and quantification of iron deposition in cirrhotic liver. METHODS: Fifty-five cirrhotic patients underwent hepatic magnetic resonance imaging examination including SWI and multiecho T2*-weighted imaging (T2*WI). Detection of iron deposition and number of siderotic nodules were compared between SWI and T2*WI. Correlation among SWI phase value, T2* value, and hepatic iron concentration were determined...
November 23, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27861200/imaging-of-hereditary-tumors-of-the-female-genital-system
#14
Sarah M Rothan, Christine O Menias, Yehia M ElGuindy, Corey T Jensen, Akram Shaaban, Priya Bhosale, Michelle V Lee, Venkata S Katabathina, Khaled M Elsayes
Cancers of the female genital system, particularly endometrial and ovarian cancers, can be associated with hereditary cancer syndromes such as hereditary breast and ovarian cancer and Lynch syndrome. Cancers that are found in the setting of a hereditary cancer syndrome are often unique in presentation, clinical features, and pathologic profiles when compared with sporadic tumors. This article reviews the hereditary cancer syndromes associated with gynecological malignancies, as well as the imaging findings and staging system of endometrial and ovarian cancers...
November 17, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27861199/heart-rate-reduction-with-adjusted-dose-ivabradine-in-patients-undergoing-coronary-computed-tomographic-angiography-a-randomized-trial
#15
Blaž Kacijan, Zala Novak, Borut Jug, Maja Dolenc Novak, Matjaž Vrtovec, Barbara Gužič Salobir
OBJECTIVE: Our prospective, randomized, open-label study assessed the efficacy of a heart rate-lowering, adjusted-dose protocol with ivabradine prior to coronary computed tomographic angiography (CCTA). METHODS: Patients undergoing CCTA were randomized to 7 days of adjusted-dose ivabradine or standard care (ie, no additional medication). Heart rate and β-blocker and antianxiety medication use on the day of the CCTA were recorded. RESULTS: One hundred one patients were randomized (mean age, 60 [SD, 13] years; 66% women)...
November 17, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27861198/digital-subtraction-of-magnetic-resonance-images-improves-detection-and-characterization-of-pancreatic-neuroendocrine-neoplasms
#16
Riccardo De Robertis, Paolo Tinazzi Martini, Sara Cingarlini, Silvia Ortolani, Giovanni Butturini, Paolo Regi, Luca Landoni, Giampaolo Tortora, Paolo Pederzoli, Mirko D'Onofrio
OBJECTIVE: The aim of this study was to evaluate the usefulness of digital image subtraction of contrast-enhanced magnetic resonance (MR) images for detection and characterization of pancreatic neuroendocrine neoplasms (PanNENs). METHODS: Magnetic resonance examinations of 50 histologically verified PanNENs were retrospectively evaluated by 2 radiologists; 50 ductal adenocarcinomas were included as a control group. Late arterial phase images and correspondent subtracted images were analyzed...
November 17, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27824676/the-effect-of-patient-diameter-on-the-dual-energy-ratio-of-selected-contrast-producing-elements
#17
Jack W Lambert, Paul F FitzGerald, Peter M Edic, Yuxin Sun, Peter J Bonitatibus, Robert E Colborn, Benjamin M Yeh
OBJECTIVES: The aim of this study was to assess whether the low- to high-kVp computed tomography (CT) number ratio at dual-energy CT is affected by changes in patient diameter. METHODS: Seven contrast-producing elements were housed sequentially within an abdomen phantom. Fat rings enlarged the phantom diameter from 26 to 44 cm. The phantom was scanned using single-energy CT at tube potentials of 80 and 140 kVp and rapid-kVp-switching dual-energy CT. RESULTS: CT numbers decreased proportionally (~20% CT number reduction for smallest to largest phantom diameters) for low- and high-energy acquisitions but resulted in consistent dual-energy ratios for each contrast element...
November 7, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27824675/-fat-brook-in-the-popliteal-fossa-cadaveric-and-clinical-investigation-with-magnetic-resonance-imaging
#18
Yoonah Song, Seunghun Lee, Doo-Jin Paik, Jiyoon Bae
OBJECTIVE: This study aimed to describe the "fat brook" (FB) in the popliteal fossa of a cadaver and to evaluate its clinical significance. METHODS: Ten fresh cadaveric knees underwent magnetic resonance imaging and histologic analyses. In addition, magnetic resonance imaging images from 321 patients (108 men, 213 women; mean age, 49.8 years; age range, 5-92 years) were retrospectively reviewed. Two radiologists independently determined the presence/absence of the FB and internal derangement of the knee...
November 7, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27824674/small-bowel-gastrointestinal-stromal-tumors-multidetector-computed-tomography-enhancement-pattern-and-risk-of-progression
#19
Franco Verde, Ralph H Hruban, Elliot K Fishman
OBJECTIVE: Small bowel gastrointestinal stromal tumors (SB-GISTs) are rare lesions with a variable appearance on computed tomography (CT). This case series analyzes the CT enhancement pattern with the histologic risk assessment of tumor progression. METHODS: Local institutional pathology database was searched for SB-GISTs from 2000 to 2015. Pathology reports and clinical notes were reviewed. Imaging was qualitatively reviewed for pattern of enhancement categorized into homogeneous or heterogeneous groups...
November 7, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27824673/prognostic-value-of-computed-tomography-detected-extramural-venous-invasion-to-predict-disease-free-survival-in-patients-with-gastric-cancer
#20
Tae Un Kim, Suk Kim, Nam Kyung Lee, Hak Jin Kim, Ga Jin Han, Jun Woo Lee, Hyun Jung Baek, Tae Yong Jeon, Hyun Sung Kim, Do Yoon Park
OBJECTIVE: This study aimed to investigate whether there is a correlation between the computed tomography-detected extramural venous invasion (ctEMVI) and disease-free survival (DFS) in patients with gastric cancer using pathologic lymphovascular invasion as a reference standard. METHODS: We retrospectively reviewed 153 patients with gastric cancer who underwent computed tomography during 1 year. Differences in pathological findings between the ctEMVI-positive and ctEMVI-negative groups were analyzed...
November 7, 2016: Journal of Computer Assisted Tomography
journal
journal
27034
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"