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Rectal MRI

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https://www.readbyqxmd.com/read/28209482/effectiveness-of-a-tailored-anterior-saturation-band-in-the-improvement-of-the-image-quality-of%C3%A2-pelvic-magnetic-resonance-for-assessing-rectal%C3%A2-cancer
#1
Chen-Chang Lee, Po-Chou Chen, Hong-Hwa Chen, Chung-Cheng Huang, Li-Han Lin, Shu-Hang Ng, Min-Chi Chen, Sheung-Fat Ko
PURPOSE: We sought to test the effectiveness of the application of a tailored anterior saturation band (ASB) to improve the image quality of pelvic magnetic resonance imaging (MRI) for assessing rectal cancer. METHODS: A total of 165 patients with MRI assessment of rectal cancer between 2013 and 2015 were included. The image quality scores (4-point scale: 1, nondiagnostic through 4, excellent) of MRI without and with tailored ASBs were compared. Sensitivity, specificity, positive and negative predictive values, and accuracy of pelvic MRIs with and without a tailored ASB for T-staging in 65 patients with direct surgery and 67 patients with chemoradiotherapy before surgery were evaluated...
January 25, 2017: Clinical Colorectal Cancer
https://www.readbyqxmd.com/read/28200088/mri-assessment-and-outcomes-in-patients-receiving-neoadjuvant-chemotherapy-only-for-primary-rectal-cancer-longterm-results-from-the-gemcad-0801-trial
#2
U B Patel, G Brown, I Machado, J Santos-Cores, C Pericay, E Ballesteros, A Salud, M Isabel-Gil, C Montagut, J Maurel, J Ramón-Ayuso, C Fernandez-Martos
No abstract text is available yet for this article.
February 14, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28179091/rectal-cancer-french-intergroup-clinical-practice-guidelines-for-diagnosis-treatments-and-follow-up-snfge-ffcd-gercor-unicancer-sfcd-sfed-sfro
#3
Jean-Pierre Gérard, Thierry André, Frédéric Bibeau, Thierry Conroy, Jean-Louis Legoux, Guillaume Portier, Jean-François Bosset, Guillaume Cadiot, Olivier Bouché, Laurent Bedenne
INTRODUCTION: This document is a summary of the French Intergroup guidelines regarding the management of rectal adenocarcinoma published in February 2016. METHOD: This collaborative work, under the auspices of most of the French medical societies involved in the management of rectal cancer, is based on the previous guidelines published in 2013. Recommendations are graded into 3 categories according to the level of evidence of data found in the literature. RESULTS: In agreement with the ESMO guidelines (2013), non-metastatic rectal cancers have been stratified in 4 risk groups according to endoscopy, MRI or endorectal-ultrasonography...
January 20, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28177989/accuracy-of-mri-in-restaging-locally-advanced-rectal-cancer-after-preoperative-chemoradiation
#4
Joris J van den Broek, Floor S W van der Wolf, Max J Lahaye, Luc A Heijnen, Christof Meischl, Martin A Heitbrink, W Hermien Schreurs
BACKGROUND: Patients with a locally advanced rectal carcinoma benefit from preoperative chemoradiotherapy. MRI is considered the first choice imaging modality after preoperative chemoradiation, although its reliability for restaging is debatable. OBJECTIVE: The purpose of this study was to determine the accuracy of MRI in restaging locally advanced rectal cancer after preoperative chemoradiation. DESIGN: This was a retrospective study. SETTINGS: The study was conducted in a Dutch high-volume rectal cancer center...
March 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/28168369/chemical-shift-effect-predicting-lymph-node-status-in-rectal-cancer-using-high-resolution-mr-imaging-with-node-for-node-matched-histopathological-validation
#5
Hongmei Zhang, Chongda Zhang, Zhaoxu Zheng, Feng Ye, Yuan Liu, Shuangmei Zou, Chunwu Zhou
OBJECTIVES: To evaluate the value of the chemical shift effect (CSE) as well as other criteria for the prediction of lymph node status. MATERIALS AND METHODS: Twenty-nine patients who underwent radical surgery of rectal cancers were studied with pre- and postoperative specimen MRI. Lymph nodes were harvested from transverse whole-mount specimens and compared with in vivo and ex vivo images to obtain a precise slice-for-section match. Preoperative MR characteristics including CSE, as well as other predictors, were evaluated by two readers independently between benign and metastatic nodes...
February 6, 2017: European Radiology
https://www.readbyqxmd.com/read/28165653/novel-biparametric-mri-and-targeted-biopsy-improves-risk-stratification-in-men-with-a-clinical-suspicion-of-prostate-cancer-improd-trial
#6
Ivan Jambor, Peter J Boström, Pekka Taimen, Kari Syvänen, Esa Kähkönen, Markku Kallajoki, Ileana Montoya Perez, Tommi Kauko, Jaakko Matomäki, Otto Ettala, Harri Merisaari, Aida Kiviniemi, Peter B Dean, Hannu J Aronen
PURPOSE: To evaluate the role of a 3T biparametric magnetic resonance imaging (bpMRI), T2 -weighted imaging, and three separate diffusion-weighted imaging acquisitions combined with targeted biopsy (TB) for improving risk stratification of men with elevated prostate-specific antigen (PSA). MATERIALS AND METHODS: Between March 2013 and February 2015, 175 men with a clinical suspicion of prostate cancer (PCa) were offered bpMRI (NCT01864135) based on a suspicion of PCa (two repeated PSA measurements in the range 2...
February 6, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28160039/measuring-the-apparent-diffusion-coefficient-in-primary-rectal-tumors-is-there-a-benefit-in-performing-histogram-analyses
#7
Miriam M van Heeswijk, Doenja M J Lambregts, Monique Maas, Max J Lahaye, Z Ayas, Jos M G M Slenter, Geerard L Beets, Frans C H Bakers, Regina G H Beets-Tan
PURPOSE: The apparent diffusion coefficient (ADC) is a potential prognostic imaging marker in rectal cancer. Typically, mean ADC values are used, derived from precise manual whole-volume tumor delineations by experts. The aim was first to explore whether non-precise circular delineation combined with histogram analysis can be a less cumbersome alternative to acquire similar ADC measurements and second to explore whether histogram analyses provide additional prognostic information. METHODS: Thirty-seven patients who underwent a primary staging MRI including diffusion-weighted imaging (DWI; b0, 25, 50, 100, 500, 1000; 1...
February 3, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28157723/integrated-care-pathway-for-rectal-cancer-treatment-health-care-resource-utilization-costs-and-outcomes
#8
Silvia T Kobayashi, Maria D P E Diz, Alessandro G Campolina, Patricia C De Soárez, Ulysses Ribeiro, Sergio C Nahas, Karina G M C Vasconcelos, Fernanda Capareli, Ivan Cecconello, Paulo M Hoff
AIM: Managed Flow C20 (MFC20) is an integrated care pathway (ICP) for rectal cancer implemented at a public teaching hospital. This study aims to quantify resource utilization and estimate direct costs and outcomes associated with the use of this ICP. METHODS: We evaluated consecutive rectal cancer patients treated with neoadjuvant chemoradiotherapy (nCRT) followed by surgery, comparing the period before the ICP implementation (Pre-MFC20 group) and after (MFC20 group)...
February 2, 2017: International Journal of Evidence-based Healthcare
https://www.readbyqxmd.com/read/28157066/multiparametric-mri-in-detection-and-staging-of-prostate-cancer
#9
Lars Boesen
BACKGROUND: Prostate cancer (PCa) is the second leading cause of cancer-related mortality and the most frequently diagnosed male malignant disease among men in the Nordic countries. The manifestation of PCa ranges from indolent to highly aggressive disease and due to this high variation in PCa progression, the diagnosis and subsequent treatment planning can be challenging. The current diagnostic approach with PSA testing and digital rectal examination followed by transrectal ultrasound biopsies (TRUS-bx) lack in both sensitivity and specificity in PCa detection and offers limited information about the aggressiveness and stage of the cancer...
February 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28149883/focusing-the-management-of-rectal-cancer
#10
COMMENT
Rachel Dbeis, Neil J Smart, Ian R Daniels
Rectal cancer treatment has undergone major changes over the last 15 years with a focus on individualized care based around MRI assessment of the relationship of the tumour to the mesorectal fascia, improved surgical techniques and targeted use of pre-operative oncological therapies in patients with locally advanced disease. The recognition that some tumours responded completely to pre-operative chemoradiotherapy, and the selective use of a non-operative policy has led to a quest to further identify those patients and their tumour in whom this approach could be used, irrespective of MRI stage...
December 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28145532/computational-imaging-reveals-shape-differences-between-normal-and-malignant-prostates-on-mri
#11
Mirabela Rusu, Andrei S Purysko, Sadhna Verma, Jonathan Kiechle, Jay Gollamudi, Soumya Ghose, Karin Herrmann, Vikas Gulani, Raj Paspulati, Lee Ponsky, Maret Böhm, Anne-Maree Haynes, Daniel Moses, Ron Shnier, Warick Delprado, James Thompson, Phillip Stricker, Anant Madabhushi
We seek to characterize differences in the shape of the prostate and the central gland (combined central and transitional zones) between men with biopsy confirmed prostate cancer and men who were identified as not having prostate cancer either on account of a negative biopsy or had pelvic imaging done for a non-prostate malignancy. T2w MRI from 70 men were acquired at three institutions. The cancer positive group (PCa+) comprised 35 biopsy positive (Bx+) subjects from three institutions (Gleason scores: 6-9, Stage: T1-T3)...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28144459/a-rare-coexistence-of-retrorectal-and-ovarian-cysts-a-case-report
#12
Setareh Soltany
INTRODUCTION: Retrorectal cysts are rare benign lesions which are frequently diagnosed in middle-aged females. According to their origin and histopathologic features, retrorectal cysts are classified as squamous-lined (dermoid or epidermoid) cysts, postanal gut (tailgut) cysts, and rectal duplications (enteric or enterogenous cysts, enterocystomas). Described in this case report is an extremely unusual patient, a woman who simultaneously had a retrorectal cyst and an ovarian serous cystadenoma in addition to a long history of misdiagnosis and multiple unsuccessful surgeries...
September 2016: Iranian Red Crescent Medical Journal
https://www.readbyqxmd.com/read/28124535/does-mri-help-in-the-pre-operative-evaluation-of-pelvic-fracture-urethral-distraction-defect-a-pilot-study
#13
Rajadoss Muthukrishna Pandian, Nirmal Thampi John, Anu Eapen, B Antonisamy, Antony Devasia, Nitin Kekre
OBJECTIVES: To study the usefulness of MRI in preoperative evaluation of PFUDD. Can MRI provide additional information on urethral distraction defect (UDD) and cause of erectile dysfunction (ED)? MATERIALS AND METHODS: In this prospective study, consecutive male patients presenting with PFUDD were included from Feb 2011 till Dec 2012. Those with traumatic spinal cord injury and pre-existing ED were excluded. Patients were assessed using IIEF questionnaire, retrograde urethrogram and micturating cystourethrogram (RGU+MCU) and MRI pelvis...
January 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28124523/predictive-role-of-trimprob-associated-with-multiparametric-mri-in-the-diagnosis-of-prostate-cancer
#14
Gustavo Cardoso Guimaraes, Walter Henriques da Costa, Renato Almeida Rosa, Stênio Zequi, Ricardo Favaretto
OBJECTIVES: To evaluate the predictive value of TRIMprob test to detect prostate cancer (PCa) in patients referred to prostate biopsy (PB). MATERIAL AND METHODS: Patients with PSA <10ng/mL and rectal exam without findings suggestive of prostate cancer were selected for TRIMprob evaluation. Exam was performed by a single operator through transperineal approach. Patients admitted for the study were submitted to TRIMprob and multiparametric magnetic resonance (mpMRI) and posteriorly to PB...
January 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28116474/prenatal-magnetic-resonance-and-ultrasonographic-findings-in-small-bowel-obstruction-imaging-clues-and-postnatal-outcomes
#15
Eva I Rubio, Anna R Blask, Andrea T Badillo, Dorothy I Bulas
BACKGROUND: Prenatal small-bowel obstruction can result from single or multiple atresias, and it can be an isolated abnormality or part of a syndrome. It is sometimes the first manifestation of cystic fibrosis. Accurate prediction of the level of obstruction and length of bowel affected can be difficult, presenting a challenge for counseling families and planning perinatal management. OBJECTIVE: To review the prenatal US and MRI findings of small-bowel obstruction and to assess whether fetal MRI adds information that could improve prenatal counseling and perinatal management...
January 23, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28111879/detection-of-prostate-cancer-using-magnetic-resonance-imaging-ultrasonography-fusion-targeted-biopsy-in-african-american-men
#16
Toshitaka Shin, Thomas B Smyth, Osamu Ukimura, Nariman Ahmadi, Andre Luis de Castro Abreu, Masakatsu Oishi, Hiromitsu Mimata, Inderbir S Gill
OBJECTIVE: To assess the diagnostic yield of targeted prostate biopsy in African-American (A-A) men using image fusion of multi-parametric magnetic resonance imaging (mp-MRI) with real-time trans-rectal ultrasonography (US). PATIENTS AND METHODS: We retrospectively analyzed 661 patients (117 A-A and 544 Caucasian) who underwent pre-biopsy mp-MRI and the following MRI/US fusion biopsy (UroStation, Koelis) (10/2012 - 8/2015). The mp-MRIs were reported on a 5-point Likert scale of suspicion...
January 23, 2017: BJU International
https://www.readbyqxmd.com/read/28096724/essential-items-for-structured-reporting-of-rectal-cancer-mri-2016-consensus-recommendation-from-the-korean-society-of-abdominal-radiology
#17
REVIEW
(no author information available yet)
High-resolution rectal MRI plays a crucial role in evaluating rectal cancer by providing multiple prognostic findings and imaging features that guide proper patient management. Quality reporting is critical for accurate effective communication of the information among multiple disciplines, for which a systematic structured approach is beneficial. Existing guides on reporting of rectal MRI are divergent on some issues, largely reflecting the differences in overall management of rectal cancer patients between the United States and Europe...
January 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28089690/mri-evaluation-of-rectal-cancer-staging-and-restaging
#18
REVIEW
Courtney C Moreno, Patrick S Sullivan, Pardeep K Mittal
Magnetic resonance imaging (MRI) plays an important role in the staging and restaging of rectal cancer. Multiplanar high-resolution (≤3-mm section thickness) T2-weighted images are the primary sequences used for rectal cancer staging. No preprocedural bowel cleansing regimen, intravenous contrast material, nor endorectal coil is necessary. MRI is highly accurate for differentiating T1-T2 disease from T3 and T4 disease, an important distinction as patients with T3 and T4 tumors typically undergo preoperative neoadjuvant chemoradiation before resection...
November 21, 2016: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28086856/the-addition-of-a-sagittal-image-fusion-improves-the-prostate-cancer-detection-in-a-sensor-based-mri-ultrasound-fusion-guided-targeted-biopsy
#19
Karsten Günzel, Hannes Cash, John Buckendahl, Maximilian Königbauer, Patrick Asbach, Matthias Haas, Jörg Neymeyer, Stefan Hinz, Kurt Miller, Carsten Kempkensteffen
BACKGROUND: To explore the diagnostic benefit of an additional image fusion of the sagittal plane in addition to the standard axial image fusion, using a sensor-based MRI/US fusion platform. METHODS: During July 2013 and September 2015, 251 patients with at least one suspicious lesion on mpMRI (rated by PI-RADS) were included into the analysis. All patients underwent MRI/US targeted biopsy (TB) in combination with a 10 core systematic prostate biopsy (SB). All biopsies were performed on a sensor-based fusion system...
January 13, 2017: BMC Urology
https://www.readbyqxmd.com/read/28079398/feasibility-evaluation-of-diffusion-weighted-imaging-using-an-integrated-mri-radiotherapy-system-for-response-assessment-to-neoadjuvant-therapy-in-rectal-cancer
#20
Narek Shaverdian, Yingli Yang, Peng Hu, Steven Hart, Ke Sheng, James Lamb, Minsong Cao, Nzhde Agazaryan, David Thomas, Michael Steinberg, Daniel A Low, Percy Lee
OBJECTIVES: To evaluate the feasibility of on-board DWI with an integrated low-field MRI-radiotherapy system to assess responses to neoadjuvant chemoradiation (NAC) in rectal cancer. METHODS: A spin echo-based planar imaging diffusion sequence on a 0.35 T MRI-radiotherapy system was acquired over the course of NAC. The apparent diffusion coefficients (ADC) from the tumor region of interest (ROIs) were calculated. A functional diffusion map (fDM) was created showing a pixel-wise ADC analysis of the ROI over the course of treatment...
January 12, 2017: British Journal of Radiology
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