NMTCB CT Board Exam
• excessive nitrogen in blood & is a symptom of: azotemiarenal failure
• portion of small intestine that collapses in on itself: intussusception
• the Agatston system quantifies coronary artery calcium as minimal if: 1-10
• the Agatston system quantifies coronary artery calcium as mild if: 11-100
• the Agatston system quantifies coronary artery calcium as moderate if: -
101-400
• the Agatston system quantifies coronary artery calcium as extensive if: >400
• dysphagia: difficulty swallowing
• stages of infection in order: incubationprodromal
active convalescence
• hypertrophy of the facets that can lead to spinal stenosis: spondylosis
• narrowing of the bony canals that contain the spinal cord, nerve roots, orboth: spinal
stenosis
• a defect in the pars inarticularis commonly caused by osteophyte forma-tion:
spondylolysis
• forward slipping of an upper vertebral body over the lower due to degen-erative changes
of the facet joints: spondylolisthesis
• filtration in CT tube varies from: 6-9 mm Alumunum
• ability of detector to capture transmitted x-ray quanta & produce theappropriate response:
inherent absorption efficiency
• MSCT uses -shaped beams: cone
• beam pitch =: table feed per rotation / total collimation
• FDG dose =: 10-15 mCi
• typical range for pixel values: -1024 HU - +3071 HU
• iterative methods of reconstruction include: simultaneous reconstructionray-by-ray
correction
point-by-point correction
• Fourier Transform is a(n) method of reconstruction: analytic
• the approximate inherent filtration of the CT x-ray amounts to the alu-minum equivalent
of: 3 mm
• longitudinal dimension of voxel: z-axis
, • coronal imaging through the paranasal sinuses is typically performed withthe plane of
imaging: perpendicular to the hard plate
• absorbed dose unit: Gray
• effective dose unit: Sievert
• the dose profile is always than the slice sensitivity profile: wider
• is used in gas ionization chambers: xenon
• decreasing quantum noise = in mAs & section width: increase
• increase in noise increases & but decreases :
matrixsize & collimation
aperture size
• CBF: cerebral blood flow50-60 mL / 100 g / min
• CBV: cerebral blood volume4-5 mL / 100 g
• platelet count: 140k-440k per uL of blood
• INR: International Normalized Ratio0.8-1.2
• PTT: partial thromboplastin time25-35 seconds
• BUN: 7-25 mg / dL
• creatinine: 0.5-1.5 mg / dL8. GFR (men): 70 +/- 14
• GFR (women): 60 +/- 10
• PT: prothrombin time12-15 seconds
• max IV contrast for a child shouldn't exceed: 3 mL / kg of body weight
• excretion half-life of IV contrast: 1-2 hours
• barium sulfate concentration: 1-3%
• water-soluble oral contrast for abdomen/pelvis should contain %iodine: 2-5
• high-osmolar contrast = mOsm / kg of water: 1000-2400
• risk factors for contrast-induced nephrotoxicity (CIN): diabetesmyoloma
cardiac diseaseadvanced age
• hepatic contrast enhancement phases: arterial phaseportal/hepatic venous phase
equilibrium phasedelayed phase
• excessive nitrogen in blood & is a symptom of: azotemiarenal failure
• portion of small intestine that collapses in on itself: intussusception
• the Agatston system quantifies coronary artery calcium as minimal if: 1-10
• the Agatston system quantifies coronary artery calcium as mild if: 11-100
• the Agatston system quantifies coronary artery calcium as moderate if: -
101-400
• the Agatston system quantifies coronary artery calcium as extensive if: >400
• dysphagia: difficulty swallowing
• stages of infection in order: incubationprodromal
active convalescence
• hypertrophy of the facets that can lead to spinal stenosis: spondylosis
• narrowing of the bony canals that contain the spinal cord, nerve roots, orboth: spinal
stenosis
• a defect in the pars inarticularis commonly caused by osteophyte forma-tion:
spondylolysis
• forward slipping of an upper vertebral body over the lower due to degen-erative changes
of the facet joints: spondylolisthesis
• filtration in CT tube varies from: 6-9 mm Alumunum
• ability of detector to capture transmitted x-ray quanta & produce theappropriate response:
inherent absorption efficiency
• MSCT uses -shaped beams: cone
• beam pitch =: table feed per rotation / total collimation
• FDG dose =: 10-15 mCi
• typical range for pixel values: -1024 HU - +3071 HU
• iterative methods of reconstruction include: simultaneous reconstructionray-by-ray
correction
point-by-point correction
• Fourier Transform is a(n) method of reconstruction: analytic
• the approximate inherent filtration of the CT x-ray amounts to the alu-minum equivalent
of: 3 mm
• longitudinal dimension of voxel: z-axis
, • coronal imaging through the paranasal sinuses is typically performed withthe plane of
imaging: perpendicular to the hard plate
• absorbed dose unit: Gray
• effective dose unit: Sievert
• the dose profile is always than the slice sensitivity profile: wider
• is used in gas ionization chambers: xenon
• decreasing quantum noise = in mAs & section width: increase
• increase in noise increases & but decreases :
matrixsize & collimation
aperture size
• CBF: cerebral blood flow50-60 mL / 100 g / min
• CBV: cerebral blood volume4-5 mL / 100 g
• platelet count: 140k-440k per uL of blood
• INR: International Normalized Ratio0.8-1.2
• PTT: partial thromboplastin time25-35 seconds
• BUN: 7-25 mg / dL
• creatinine: 0.5-1.5 mg / dL8. GFR (men): 70 +/- 14
• GFR (women): 60 +/- 10
• PT: prothrombin time12-15 seconds
• max IV contrast for a child shouldn't exceed: 3 mL / kg of body weight
• excretion half-life of IV contrast: 1-2 hours
• barium sulfate concentration: 1-3%
• water-soluble oral contrast for abdomen/pelvis should contain %iodine: 2-5
• high-osmolar contrast = mOsm / kg of water: 1000-2400
• risk factors for contrast-induced nephrotoxicity (CIN): diabetesmyoloma
cardiac diseaseadvanced age
• hepatic contrast enhancement phases: arterial phaseportal/hepatic venous phase
equilibrium phasedelayed phase
