Publications by authors named "Sayaka Daido"
Article Synopsis
- The study aimed to analyze the MRI features and staging of neuroendocrine carcinoma (NEC) of the uterine cervix, while also examining the relationship between pathology and survival rates.
- Findings indicated that most cases showed a slightly high signal intensity and restricted diffusion in MRI scans, with a high overall accuracy of 88% for staging when compared to pathology results.
- The research revealed that fewer patients with advanced stages (III and IV) had favorable survival outcomes, with significant recurrence rates observed during the follow-up period.
MR imaging of uterine morphology and dynamic changes during lactation.
J Magn Reson Imaging
February 2017
Purpose: To investigate the influence of lactation and ovarian hormones on uterine morphology and function by comparing uteruses of lactating women with nulliparous women on MRI.
Materials And Methods: Sagittal T2WI and cine MR images were obtained with 1.5 Tesla (T) and 3T scanner from 22 lactating women and 16 nulliparous women as a control group.
Objectives: To evaluate the diagnostic accuracy of subendometrial enhancement (SEE) in assessing the myometrial invasion in endometrial cancer, the frequency and clinical significance of peritumoral enhancement (PTE) on dynamic contrast enhanced (DCE) imaging.
Materials And Methods: MR images of 147 patients with endometrial cancer were retrospectively analyzed for intact SEE and PTEs: Type 1, a focal early enhancement peritumorally, and Type 2, an irregular thin-layered early intense enhancement peritumorally. Two radiologists independently assessed intact SEE and PTEs on DCE imaging and compared the lesions by the presence and depth of myometrial invasion, grade, lymphovascular space involvement (LVSI), and lymph node metastasis.
Objective: We used magnetic resonance (MR) imaging and hormonal levels to evaluate the influence of chemotherapy for cervical cancer on female pelvic reproductive organs.
Materials And Methods: We retrospectively evaluated 16 pre- and 11 postmenopausal patients with cervical cancer who underwent neoadjuvant chemotherapy (NACT) and radical surgery. We evaluated morphological changes in the uterus and ovaries by MR imaging both quantitatively and qualitatively, measuring the volume of the uterine body and bilateral ovaries, endometrial thickness, and signal intensity of the myometrium and bilateral ovaries and assessing visibility of the junctional zone and bilateral ovarian follicles.
Objectives: The purpose of this study was to quantitatively evaluate 3 types of magnetic resonance imaging (MRI) parameters in parallel for the early prediction of neoadjuvant chemotherapy (NACT) effectiveness in cervical cancer-tumor volume parameters, diffusion parameters, and perfusion parameters.
Materials And Methods: We prospectively evaluated 13 patients with International Federation of Gynecology and Obstetrics stage IB to IIB cervical squamous cell carcinoma who underwent 3 serial MRI studies, that is, pretreatment, post-first course NACT, and post-second course NACT followed by radical hysterectomy. We obtained tumor volume parameters, diffusion parameters, and dynamic contrast material-enhanced perfusion parameters quantitatively from pretreatment MRI and post-first course MRI.
Purpose: To evaluate the time course effects of anticholinergic agents on uterine contractility and intestinal motion with cine magnetic resonance imaging (MRI).
Materials And Methods: Using a 1.5 T MRI scanner, 60 T2-weighted half-Fourier rapid acquisitions with relaxation enhancement images of the uterus were serially acquired over 3 minutes in 25 healthy women in the periovulatory phase, at four instances, prior to and 2-5, 5-8, and 10-13 minutes after intravenous injection of 20 mg of hyoscine butylbromide.
Objective: To retrospectively assess a new CT finding of esophageal cancer, "early esophageal rim enhancement".
Materials And Methods: Sixty-two patients with pathological proven esophageal squamous cell carcinoma who underwent dual phase CT imaging (arterial and venous phases) were enrolled. Two blinded observes independently evaluated presence of partial or circumferential enhancement of the esophageal periphery on arterial (early esophageal rim enhancement) and venous phase CT images.
Purpose: To investigate effects of hyoscine butylbromide (HBB) on the appearance of three zonal anatomy of the uterine corpus on T2-weighted images (T2WI).
Materials And Methods: Sagittal T2WI of the pelvis were acquired before and after intramuscular administration of HBB with interval of 10 minutes in 22 healthy volunteers. By drawing polygonal regions of interest (ROIs), the uterine corpus was delineated into outer myometrium (OM), junctional zone (JZ), and endometrium (EM) in 20 subjects.