radiation-induced lung injuryacute(1-3months)
impaired gas exchange due to exudative alveolitis → ☆hyaline membrane formation, pneumocyte sloughing(slúː)
chronic(6-12months)
radiation fibrosis(dense fibrous bands) results in decreased lung volume and dilated bronchi and bronchioles(ie traction bronchiectasis)
(predisposition to chronic infections) respiratoryradiologyUWorld Jul 5, 2020, 2:34 AM HirotoShishido
late stage radiation dermatitis(months to years, acute<90 days after radiotherapy)
fibrosis= ☆homogenization of dermal collagen, vascular damage→ chronic hypoxia and ulceration, ☆abnormal dilatied microvasculature(ie telangiectasias) dermatologyradiologyUWorld May 29, 2020, 11:32 PM HirotoShishido
CXR
denser structures inside the chest wall
denser structures outside the chest wallinside→ trachea, heart, aorta, diaphragm, PA(upper than PV) → mass, liquid
outside→ scapula, clavicle, vertebra, ribs → bone radiology Jan 28, 2020, 12:16 AM HirotoShishido
fractional flow reserveFFR
is a guide wire-based procedure that can accurately measure blood pressure and flow through a specific part of the coronary artery. FFR is done through a standard diagnostic catheter at the time of a coronary angiogram.
(percentage of blockage is not very accurate) cardiovascularradiology Oct 4, 2019, 4:36 AM HirotoShishido
two types of catheter ablationradiofrequency ablation
(heat the tissue)
ground glass opacitiesnon-specific sign with a wide etiology
including
opportunistic infection(e.g. pneumocystis,CMV,RSV)
chronic interstitial disease(interstitial pneumonia)
acute alveolar disease(ARDS) respiratoryradiology Sep 29, 2019, 3:08 AM HirotoShishido
70 yo woman, skinny, no past operation
the common cause of obstruction easily missed outobturator hernia radiologygastrointestinal Sep 26, 2019, 12:51 AM HirotoShishido
Pictureportal venous gas
ischemic bowel is common
mural gas as well as mesenteric gas can be seen
embolic agents for catheter embolizationtemporary→absorbable gelatin sponge(10-14days, cannot be used the patients with decreased coagulability)
permanent→coil, NBCA(N-butyl 2-cyanoacrylate, has to be mixed with lipiodol emulsion as contrast agent) radiologyIVR Sep 19, 2019, 8:50 PM HirotoShishido
