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Pelvic MRI

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https://www.readbyqxmd.com/read/28227004/automated-tracking-segmentation-and-trajectory-classification-of-pelvic-organs-on-dynamic-mri
#1
Iman Nekooeimehr, Susana Lai-Yuen, Paul Bao, Alfredo Weitzenfeld, Stuart Hart, Iman Nekooeimehr, Susana Lai-Yuen, Paul Bao, Alfredo Weitzenfeld, Stuart Hart, Paul Bao, Susana Lai-Yuen, Stuart Hart, Alfredo Weitzenfeld, Iman Nekooeimehr
Pelvic organ prolapse is a major health problem in women where pelvic floor organs (bladder, uterus, small bowel, and rectum) fall from their normal position and bulge into the vagina. Dynamic Magnetic Resonance Imaging (DMRI) is presently used to analyze the organs' movements from rest to maximum strain providing complementary support for diagnosis. However, there is currently no automated or quantitative approach to measure the movement of the pelvic organs and their correlation with the severity of prolapse...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225831/whole-body-staging-of-female-patients-with-recurrent-pelvic-malignancies-ultra-fast-18f-fdg-pet-mri-compared-to-18f-fdg-pet-ct-and-ct
#2
Julian Kirchner, Lino Morris Sawicki, Saravanabavaan Suntharalingam, Johannes Grueneisen, Verena Ruhlmann, Bahriye Aktas, Cornelius Deuschl, Ken Herrmann, Gerald Antoch, Michael Forsting, Lale Umutlu
OBJECTIVES: To evaluate the diagnostic feasibility of an ultra-fast 18F-FDG PET/MRI protocol, including T2-w and contrast-enhanced T1-w imaging as well as metabolic assessment (PET) in comparison to 18F-FDG PET/CT and CT for whole-body staging of female patients with suspected recurrence of pelvic malignancies. METHODS: 43 female patients with suspected tumor recurrence were included in this study. Suspicion was based on clinical follow-up and abnormal findings on imaging follow-up...
2017: PloS One
https://www.readbyqxmd.com/read/28225579/intravoxel-incoherent-motion-mri-assessment-of-chemoradiation-induced-pelvic-bone-marrow-changes-in-cervical-cancer-and-correlation-with-hematological-toxicity
#3
Elaine Yuen Phin Lee, Jose Angelo Udal Perucho, Vince Vardhanabhuti, Jian He, Steven Wai Kwan Siu, Siew Fei Ngu, Nina A Mayr, William T C Yuh, Queenie Chan, Pek-Lan Khong
PURPOSE: To investigate bone marrow changes after chemoradiation (CRT) using intravoxel incoherent motion magnetic resonance imaging (IVIM-MRI) and correlate imaging changes with hematological toxicity (HT) in patients with locally advanced cervical cancer. MATERIALS AND METHODS: Thirty-nine patients with newly diagnosed cervical cancer were prospectively recruited for two sequential 3.0T IVIM-MRI studies: before treatment (MRI-1) and 3-4 weeks after standardized CRT (MRI-2)...
February 22, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28217667/the-efficacy-of-pre-delivery-prophylactic-trans-catheter-arterial-balloon-occlusion-of-bilateral-internal-iliac-artery-in-patients-with-suspected-placental-adhesion
#4
Yoon Jin Cho, Yong Taek Oh, Suk Young Kim, Ju Young Kim, Sun Young Jung, Seung Joo Chon, Jeong Ho Kim, Sung Su Byun
OBJECTIVE: Prophylactic trans-catheter arterial balloon occlusion (PTABO) before cesarean section of placenta previa totalis has been introduced to prevent massive hemorrhage. The purpose of this study is to evaluate the clinical usefulness of PTABO in cases of suspected placental adhesion and to examine antepartal risk factors and perinatal outcomes in women with placental adhesion. METHODS: Between January 2012 and December 2015, 77 patients who had undergone ultrasonography for evaluation of placenta previa were enrolled in this study...
January 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28214571/encountering-dropped-gallstones-during-robotic-assisted-laparoscopic-radical-prostatectomy
#5
Lisa Brubaker, Michael Allgaeuer, Baris Turkbey, Peter Pinto, Abhinav Sidana
We describe a case of an unusual finding during robotic-assisted laparoscopic radical prostatectomy and bilateral pelvic lymphadenectomy in a 66-year-old male with Stage IIb (T2c, N0, M0) prostate adenocarcinoma. During the operation, intraperitoneal examination of the rectovesical pouch revealed calcifications and stones which were subsequently identified as gallstones. While these stones were not noted initially on this patient's preoperative multiparametric MRI (mpMRI), a retrospective review demonstrated hypointense foci in the rectovesical pouch...
February 15, 2017: Urology
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
#6
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/28197351/a-case-of-malignant-melanoma-of-the-uterine-cervix-with-disseminated-metastases-throughout-the-vaginal-wall
#7
Tomoko Noguchi, Nami Ota, Yasushi Mabuchi, Shigetaka Yagi, Sawako Minami, Hisako Okuhira, Yuki Yamamoto, Yasushi Nakamura, Kazuhiko Ino
Malignant melanoma (MM) in the female genital tract accounts for less than 2% of all melanomas, and the vast majority associated occur in the vulva and vagina. Primary MM of the uterine cervix is extremely rare and its prognosis is very poor. We report a case of primary MM of the cervix with dissemination throughout the vaginal wall. A 66-year-old woman presented with postmenopausal bleeding. Gynecologic examination demonstrated a 2 cm polypoid blackish-pigmented tumor on the cervix with multiple small blackish-pigmented lesions throughout the vaginal wall...
2017: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28181381/changes-in-penile-length-after-radical-prostatectomy-investigation-of-the-underlying-anatomical-mechanism
#8
Yoshifumi Kadono, Kazuaki Machioka, Kazufumi Nakashima, Masashi Iijima, Kazuyoshi Shigehara, Takahiro Nohara, Kazutaka Narimoto, Kouji Izumi, Yasuhide Kitagawa, Hiroyuki Konaka, Toshifumi Gabata, Atsushi Mizokami
OBJECTIVE: To measure changes in penile length (PL) over time before and after radical prostatectomy (RP), and to investigate the underlying mechanisms for these changes. PATIENTS AND METHODS: The stretched PL (SPL) of 102 patients was measured before, 10 days after, and at 1, 3, 6, 9, 12, 18 and 24 months after RP. The perpendicular distance from the distal end of the membranous urethra to the midline of the pelvic outlet was measured on mid-sagittal magnetic resonance imaging (MRI) slice at three time points: preoperatively; 10 days after RP; and 12 months after RP...
February 8, 2017: BJU International
https://www.readbyqxmd.com/read/28179198/cesarean-scar-ectopic-pregnancy-laparoscopic-resection-and-total-scar-dehiscence-repair-a-case-report
#9
Sara Mahgoub, Victor Gabriele, Emilie Faller, Bruno Langer, Arnaud Wattiez, Lise Lecointre, Cherif Akladios
STUDY OBJECTIVE: Illustrate laparoscopic technique for resection of cesarean scar ectopic pregnancy, associated with isthmocele repair. DESIGN: Case report SETTING: Tertiary referral centre in Strasbourg, France. The study was approved by the local IRB. BACKGROUND: Cesarean scar pregnancy is a rare form of ectopic pregnancy. The major risk of this type of pregnancy is the early uterine rupture with massive bleeding and maternal life-threatening...
February 4, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28174652/collapsed-membranes-within-pelvic-cyst-what-is-the-diagnosis
#10
Seyed Ali Dehghan Manshadi, Omid Rezahosseini, Sadegh Saberi, Faeze Salahshour, Shahrzad Mahdavi Izadi
Collapsed membranes and daughter cysts are pathognomonic for hydatid cysts on imaging. The comma-shaped lesions, visible within the hydatid cyst in sagittal view of MRI, are collapsed membranes. Although primary hydatid cyst of pelvic cavity is rare, clinicians should remember to include hydatid cysts in differential diagnosis of pelvic cysts.
February 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28171798/distribution-of-bupivacaine-hydrochloride-after-sciatic-and-femoral-nerve-blocks-in-cats-a-magnetic-resonance-imaging-study
#11
Marina C Evangelista, Julie de Lassalle, Christine Chevrier, Eric N Carmel, Denise T Fantoni, Paulo V M Steagall
The objective of this study was to evaluate the distribution of bupivacaine hydrochloride using magnetic resonance imaging (MRI) after electrical nerve stimulator (ENS)-guided sciatic (ScN) and femoral (FN) nerve blocks in cats. Six adult cats (body weight 4.8±0.6kg) were anesthetized with acepromazine-buprenorphine-propofol-isoflurane. Transverse and sagittal plan sequences of pelvic limbs were obtained using a high-field magnet (1.5T). Afterwards, the ScN and FN blocks (one block per limb) were performed using 0...
January 27, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28163256/preprocedural-mri-and-mra-in-planning-fibroid-embolization
#12
Cristina Maciel, Yen Zhi Tang, Anju Sahdev, António Miguel Madureira, Paulo Vilares Morgado
This pictorial review aims to discuss and illustrate the up-to-date use of preprocedural magnetic resonance imaging (MRI) in selecting patients and planning uterine artery embolization (UAE). The merits of magnetic resonance angiography (MRA) in demonstrating the pelvic vasculature to guide UAE are highlighted. MRI features of fibroids and their main differential diagnoses are presented. Fibroid characteristics, such as location, size, and enhancement, which may impact patient selection and outcome, are presented based on recent literature...
February 6, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28159850/protocol-for-a-prospective-observational-study-of-cortical-lower-urinary-tract-control-changes-following-intradetrusor-injection-of-botulinum-toxin-a-in-patients-with-multiple-sclerosis
#13
Rodolfo A Elizondo, Christof Karmonik, Timothy B Boone, Rose Khavari
INTRODUCTION: Multiple sclerosis (MS) is a severe debilitating disease that affects patients' quality of life. Up to 90% of patients with MS will develop lower urinary tract dysfunction within the first 18 years of the disease. If oral pharmacotherapy with anticholinergics, behavioural modifications and pelvic floor physical therapy are unsuccessful, intradetrusor injection of botulinum toxin-A (OnaBotA; Botox Allergan, Dublin, Ireland) is a highly effective option for these patients...
February 3, 2017: BMJ Open
https://www.readbyqxmd.com/read/28153700/clinical-use-of-magnetic-resonance-imaging-across-the-prostate-brachytherapy-workflow
#14
P Blanchard, C Ménard, S J Frank
MRI produces better soft tissue contrast than does ultrasonography or computed tomography for visualizing male pelvic anatomy and prostate cancer. Better visualization of the tumor and organs at risk could allow better conformation of the dose to the target volumes while at the same time minimizing the dose to critical structures and the associated toxicity. Although the use of MRI for prostate brachytherapy would theoretically result in an improved therapeutic ratio, its implementation been slow, mostly because of technical challenges...
January 30, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28153592/recurrent-urinary-tract-infections-in-a-female-child-with-polydactyly-and-a-pelvic-mass-consider-the-mckusick-kaufman-syndrome
#15
Ahmed Adam, Julian Hellig, Nasreen Mahomed, Lindsay Lambie
A 3-year-old female child presented with a history of recurrent urinary tract infections. On general examination, polydactyly and a pelvic mass were present. An imperforate hymen was also documented on vaginal inspection. Further inquiry, revealed a positive history of parental consanguinity. A magnetic resonance imaging study defined a hydrometrocolpos responsible for an obstructive cause of the recurrent urinary tract infections. In view of the above, a diagnosis of McKusick-Kaufman syndrome was made. Formal surgical repair of the imperforate hymen with hydrometrocolpos drainage resulted in complete symptom resolution...
January 30, 2017: Urology
https://www.readbyqxmd.com/read/28145532/computational-imaging-reveals-shape-differences-between-normal-and-malignant-prostates-on-mri
#16
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
#17
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/28140423/obstetrisk-nervp%C3%A3-verkan-%C3%A3-r-oftast-inte-ryggbed%C3%A3-vningens-fel
#18
Lovisa Brehmer, Johan Rutfors
Postpartum nerve injury is usually not caused by neuroaxial anesthesia - a case report In this case report we describe a woman who after giving birth had numbness and could not support her weight on the right leg. Three attempts of epidural anesthesia had been made during labor. MRI imaging of the spinal cord showed no pathology. She was treated conservatively by a physiotherapist and recovered gradually. After six months all symptoms had resolved. Postpartum nerve injury is often thought to be due to neuroaxial anesthesia, although in most cases it is caused by labor itself...
January 27, 2017: Läkartidningen
https://www.readbyqxmd.com/read/28134699/unusual-displacement-of-urinary-bladder-by-a-dilated-rectosigmoid-colon-on-bone-scintigraphy
#19
Mehrosadat Alavi, Leila Kalhor, Tahereh Ghaedian
A 7-year-old boy with chief complaint of chronic pelvic pain was referred to our nuclear medicine department for bone scintigraphy. The images showed a focus of radiotracer activity in the right side of pelvic cavity, which is further confirmed as urinary bladder by single-photon emission computed tomography (SPECT) and delayed images. Because of high possibility of mass effect in pelvic cavity, pelvic magnetic resonance imaging (MRI) was performed, and it revealed an unusual dilatation of rectosigmoid colon with no evidence of pelvic mass...
January 27, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28133346/-a-case-of-schwannoma-originating-from-the-sciatic-nerve
#20
Yohei Nose, Atsushi Naito, Takeshi Kato, Ryota Mori, Yasuo Oneda, Tomo Ishida, Ryuichi Kuwahara, Takuya Sakamoto, Kohei Murakami, Yoshiteru Katsura, Yoshiaki Ohmura, Yoshinori Kagawa, Atsushi Takeno, Yutaka Takeda, Shigeyuki Tamura
A 75-year-old man was admitted with abdominal pain and taken to our hospital. CT and MRI showed a tumor measuring 60mm in diameter in the pelvic cavity. Based on the imaging findings, we suspected a schwannoma and decided to perform surgery. As the tumor was found to be benign in intraoperative frozen section diagnosis, the tumor was enucleated. Histopathological findings showed no nuclear atypia, and the patient was diagnosed with a schwannoma. He complained of paresthesia in his right leg after surgery, and underwent walking training...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
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