The aim of the present study was to evaluate the value of diffusion-weighted imaging (DWI) and water imaging combined with dynamic contrast-enhanced scanning for the preoperative diagnosis and staging of rectal cancer. In total, 72 patients with pathologically confirmed rectal cancer were selected for examination using magnetic resonance imaging (MRI) with phased-array coils, DWI, water imaging...

Dehydration in clinical practice, as opposed to a physiological definition, refers to the loss of body water, with or without salt, at a rate greater than the body can replace it. We argue that the clinical definition for dehydration, ie, loss of total body water, addresses the medical needs of the patient most effectively. There are 2 types of dehydration, namely water loss dehydration (hypero...

The proposed EC Water Framework Directive (WFD) incorporates some new concepts in the field of water protection. Most of these concepts rely on the use of applied ecology of water ecosystems. The most important feature is that the classification of water quality is to be based on direct biological measurements of ecosystem health. It means that real biological communities should be sampled and ...

The water deprivation test is the gold standard test to differentiate central or nephrogenic diabetes insipidus (DI) from primary polydipsia (PP) in patients with polyuria and polydipsia. Few studies have addressed the diagnostic performance of this test. The aim of this retrospective cohort study was to evaluate the diagnostic performance of the standard water deprivation test, including plasm...

Compulsive water drinking can have phenomenological and pharmacotherapeutic similarities with obsessive-compulsive disorder (OCD). Substantiating neurobiological evidence is lacking for such an association. We report a patient who was referred with a diagnosis of primary polydipsia with no signs of organic pathology in structural neuroimaging. However, positron emission tomography revealed basa...

Introduction: Breast cancer is a major health problem in women worldwide. The diagnosis of the breast cancer is based on palpation, mammography and ultrasonogram. MR imaging and MR spectroscopy has the potential to facilitate improved diagnosis in patients with breast lesions. In conventional MRI, the contrast between different tissues is dependent on the relaxation properties of the water. How...

Among 1454 persons whose stool samples (n=5692) were submitted to a reference laboratory for microsporidia assessment from 1993 to 1996, microsporidia were identified in 338 persons: 261 persons infected with human immunodeficiency virus (HIV), 16 transplant patients, and 61 others. Intestinal microsporidiosis appears to be an endemic disease in HIV-positive persons (prevalence, 0.1%) and a spo...

The use of THz radiation as a potential tool for medical imaging is of increasing interest. In this paper three methods of analysis of THz spectroscopic information for diagnosis of tissue pathologies at THz frequencies are presented. The frequency-dependent absorption coefficients, refractive indices and Debye relaxation times of pure water and pure lipids were measured and used as prior knowl...

leishmaniasis is a disease caused by a malaria-like parasite called leishmania in human and some species of animals. detection of leishmaniasis has always been crucial for control and treatment of the disease. different strategies have been approached for detection of leishmania. in this review methods used for detection of leishmania infection have been discussed and compared.

background: hospitalization compared to outpatient care leads to better diagnosis. stability of diagnosis varies among different psychiatric disorders and is associated with some demographic and mental health variables. objective: the current study evaluated the stability of diagnosis in baqiyatallah hospital psychiatric ward.  methods: in this retrospective study, 908 inpatient records from th...