Items tagged “rg_39_1_new”
9 results found
Article
Spinal infection
Spinal infections are an important but relatively uncommon cause of back pain.
Clinical presentation
Patients may present with back pain, fevers, or neurological deficit. Disease progression normally is insidious and non-traumatic onset with constant non-position-dependent pain 1.
Risk fact...
Article
Videofluoroscopic swallow study
Videofluoroscopic swallow studies (also often called modified barium swallow studies) are a variation on traditional barium swallow studies. Although typical barium swallow studies / esophagrams evaluate the pharynx, the goal in these studies is to even more closely evaluate the oral cavity, pha...
Article
Claw sign (spine)
The claw sign on diffusion weighted imaging refers to a pattern of hyperintensity seen in degenerative changes in the spine (Modic type 1): well-defined, paired band-like regions of restricted diffusion affecting two contiguous vertebral bodies, resembling a claw surrounding the disc space on sa...
Article
Chemical shift ratio
Calculating the chemical shift ratio (CSR) is one way of differentiating benign thymic tissue from thymic neoplasms 1:
CSR = (tSIopp / mSIopp) / (tSIin / mSIin)
in = in phase, m = muscle, opp = opposed phase, SI = signal intensity, and t = thymus
Using a cut-off if 0.849, CSR is 100% specific...
Article
Adrenomyeloneuropathy
Adrenomyeloneuropathy is a form of X-linked adrenoleukodystrophy characterized by pronounced involvement of the spinal cord with only minor involvement of the cerebral white matter.
Clinical presentation
Clinical presentation depends on whether or not there is also cerebral involvement.
In ...
Article
Leukemia
Leukemia is a hematological neoplasm characterized by the overproduction of immature (blasts) or abnormally differentiated cells of the hematopoietic system in the bone marrow that often, but not always, extends into the peripheral blood.
This article aims to provide an overview of leukemia as...
Article
Acute myeloid leukemia
Acute myeloid leukemia (AML), also referred to as acute myelogenous leukemia, is a hematological malignancy characterized by the abnormal clonal proliferation of immature myeloid precursors (myeloblasts) or poorly differentiated cells of the hematopoietic system. It primary infiltrates the bone ...
Article
Therapy-related myeloid leukemia
Therapy-related myeloid leukaemias, also referred to as therapy-related myeloid neoplasms, occur as a late complication after cytotoxic therapies (e.g. chemotherapy, immunosuppressive therapy, and radiation therapy) performed to treat other conditions. They represent hematological malignancies w...
Article
Leukemic cell lysis pneumopathy
Leukemic cell lysis pneumopathy, also referred to as acute lysis pneumopathy, refers to an acute respiratory failure that can occur in patients with leukemia after the initiation of chemotherapy, particularly in those with hyperleukocytosis. On imaging, it manifests with features of acute respir...