BACKGROUND AND PURPOSE Several studies have reported on the clinical utility of DWI in head and neck cancer, but none of these studies compared HASTE with EPI-DWI in patients with head and neck cancer. The aim of our study was to compare detection and delineation of primary tumors and lymph nodes by using HASTE and EPI-DWI techniques in patients with HNSCC. MATERIALS AND METHODS Twelve patien...

BACKGROUND This study aimed to compare the imaging quality, apparent diffusion coefficient (ADC) values, and application values between reduced field-of-view diffusion-weighted imaging (rFOV DWI) and single-shot echo-planar-imaging diffusion-weighted imaging (SS-EPI DWI) of breast tissue. PATIENTS AND METHODS For 87 cases (75 with normal breast tissue, 12 with mammary cancer), breasts were sc...

rhabdomyosarcoma is a common primary childhood malignancy that rarely metastasizes to the breast. we report a patient with a primary sinonasal rhabdomyosarcoma metastasizing to the breast, with no distant spread. we describe the imaging appearance of rhabdomyosarcoma on magnetic resonance imaging (mri), particularly on diffusion-weighted imaging (dwi) and apparent diffusion coefficient (adc) se...

INTRODUCTION Diffusion-weighted magnetic resonance imaging (DWI) has been an important clinical tool to investigate patients with cerebral ischemia. DWI visualizes ischemic cerebral lesions within an hour. The capability of DWI to demonstrate responsible lesions as early as patient’s arrival potentially influences decision making for the individual diagnostic and therapeutic strategies. For exa...

BACKGROUND AND PURPOSE Fluid-attenuated inversion recovery vascular hyperintensities (FVH) beyond the boundaries of diffusion-weighted imaging (DWI) lesion (FVH-DWI mismatch) have been proposed as an alternative to perfusion-weighted imaging (PWI)-DWI mismatch. We aimed to establish whether FVH-DWI mismatch can identify patients most likely to benefit from recanalization. METHODS FVH-DWI mism...

BACKGROUND AND PURPOSE The aim of this study was to assess the frequency and extent of early diffusion-weighted imaging (DWI) lesion reversal after endovascular therapy and to determine whether early reversal is sustained or transient. METHODS MRI with DWI perfusion imaging was performed before (DWI 1) and within 12 hours after (DWI 2) endovascular treatment; follow-up MRI was obtained on day...

BACKGROUND Acute ischemic stroke is a major cause of mortality and morbidity in Taiwan. Diffusion-weighted image (DWI) is a sensitive and common strategy used for imaging acute ischemic stroke. CASE REPORT We present a case of a negative DWI MRI for detecting acute ischemic stroke in a clinical setting. A 75-year-old male had a DWI performed after onset of symptoms suggesting acute ischemic str...

Since the criminalization of driving while intoxicated (DWI), number cases has been rising, which brought certain pressure on judicial resources. There are different criteria for organs to determine that a perpetrator commits "DWI" dangerous offense, and there judgments in same case. For judgment DWI, organ should start with method substantive interpretation, only when standard "beyond reasonab...

BACKGROUND AND PURPOSE In acute stroke with proximal artery occlusion, FLAIR vascular hyperintensities observed beyond the boundaries of the cortical lesion on DWI (newly defined "FLAIR vascular hyperintensity-DWI mismatch") may be a marker of tissue at risk of infarction. Our aim was to compare the occurrence of FLAIR vascular hyperintensity-DWI mismatch relative to that of perfusion-weighted ...

Department of Radiology and the Research Institute of Radiological Science, Yonsei University College of Medicine, Gangnam Severance Hospital, Korea Received February 15, 2011 ; Accepted March 22, 2011 Address reprint requests to : Jeong-Sik Yu, M.D., Department of Radiology, Yonsei University College of Medicine, Gangnam Severance Hospital, 712 Eonju-ro, Gangnam-gu, Seoul 135-720, Korea. Tel. ...