Contributing Editor Greg Freiherr offers an overview of computed tomography (CT) advances at the Radiological Society of North America (RSNA) 2015. The video includes Freiherr during his booth tours with some of the key vendors who were featuring new technology.
Computed Tomography (CT)
62-Year-Old Woman Who Underwent Hysterectomy for Uterine Cancer: Sagittal chest CT images demonstrate measurement of right (A) and left (B) lung length at hilar level from apex to diaphragmatic dome. Right lung length was 20.1 cm for reader 1 and 20.0 cm for reader 2; left lung length was 21.7 cm for reader 1 and 21.3 cm for reader 2. Patient did not require postoperative mechanical ventilation.
As the world’s first FDA-cleared bedside MRI system, Hyperfine’s portable Swoop system is designed to allow physicians to rapidly understand the current state of injury to make life-saving decisions. Within minutes, the technology can acquire critical images via a wireless tablet, powered by a standard wall outlet at the patient’s bedside. (Photo: Business Wire)
Sarcopenia (Myosteatosis) at Screening CT Colonoscopy in 79-Year-Old Woman With Subsequent Hip Fracture: A & B. Image at L1 vertebral level without (A) and with (B) overlay of automated skeletal muscle segmentation (B, red). Intramuscular fat is present within paraspinal muscles (A, yellow circle). Mean muscle attenuation is similar for manually placed ROI (1.8 HU) and automated tool (3.9 HU), being markedly decreased for both approaches. Muscle cross-sectional area is relatively preserved when intramuscular fat is included.
C & D. CT images at L3 level without (C) and with (D) muscle segmentation demonstrate similar findings.
E. Hip radiograph demonstrates left intertrochanteric femoral fracture that occurred when patient fell 2 years later. Patient died 4 years after falling.
A PET-CT head and neck cancer scan showing various image reconstructions. The top left image is the separate CT scan showing the anatomy. The top right scan shows the fused PET and CT scans with false color added to help interpret the image. The bottom left scan is an initial FDG PET image showing tracer hot spots in the neck and a lymph node in the right jaw due to cancer. The right bottom image is a delayed enhancement scan showing tracer uptake over time, with normal hot spots in the bladder, kidneys, testicles and brain, which normally have higher metabolic activity. The low-grade gray shading of the anatomy is due to the normal cellular metabolism uptake of the FDG throughout the body.
Images, or a digital twin mitral valve of a patient, created from cardiac ultrasound that were used to perform a virtual surgical procedure to test how the intervention would impact the patient prior to actually performing the procedure. The right image shows color coding for sheer stresses on the valve leaflets before and after the virtual surgery. The left image shows the model quantitation of leaflet coaptation at peak systole prior to the the virtual surgery. Read the original article in Plos One.