35 research outputs found
Low - dose CT of the chest as a screening method for early detection of pulmonary cancer
Dose limitation is one of the vital principles in
radiation protection regulation. The use of that Low-dose chest CT can be a screening
method of choice for early detection of pulmonary cancer
Asessment of coronary arteries with ECG GATED 64-multidetector computed tomography (MDCT) in patients with suspected aortic dissection Stanford type A
The purpose of our study is to show the value of ECG gated 64-MDCT as an non - invasive and reliable method for simultaneous assessment of coronary arteries as part of the aortic root evaluation. Methods and Materials. From February 2009 until March 2010 we performed 46 ECG - gated, 64 MDCT examinations to confirm a diagnosis of suspected aorta ascendens dissection . A transthoracic (TTE) and/or transesophageal (TEE) echocardiography was initially performed in all patients ( mostly TEE) Patients (pts) with arrhythmia and non-stable haemodynamic conditions were excluded. All MDCT scans were performed with retrospectively ECG gated technique (0,625mm slice thickness). Premedicaton with i.v. betaBlocker (propranolol) was administrated in all with heart rate> 70 bpm
Modification of the standard 7-day Ovsynch protocol to increase the luteolytic and synchronization risks in dairy cows
We hypothesized that a single dose of PGF2Ξ± belatedly injected on day 8 after GnRH-1 in cows receiving a 7-day Ovsynch-56 protocol (GnRH β 7 days β PGF2Ξ± β 56h β GnRH β 16h β timed AI) will increase the proportion of cows with complete luteolysis. At day 35Β±3 postpartum, 70 lactating Holstein cows from one herd were scored for body condition and pre-synchronized with PGF2Ξ± and GnRH (3 days apart) and 7 days later submitted to an Ovsynch-56 protocol for first AI after random assignment to two treatments: (1) OV-7 (n=35) with an injection of PGF2Ξ± either on day 7; or (2) OV-8 (n=35) on day 8 after G1, respectively. Blood was collected before the first PGF2Ξ±, at day 7 and day 8 in OV-7 and OV-8, respectively, at AI and at 7 days after AI to assess progesterone concentration. Ten cows were classified as acyclic and were excluded from the analysis resulting in 60 cows (OV-8, n=27; OV-7, n=33). In total, more (P=0.01) OV-8 cows and more (P=0.04) primiparous OV-8 cows had complete luteolysis compared with their OV-7 herd mates. In addition, more (P=0.008) OV-8 cows with BCS<2.75 had complete luteolysis compared with their OV-7 herd mates, whereas no difference was observed between treatments among cows with BCS β₯2.75. In conclusion, delaying the application of PGF2Ξ± by 1 day reduced the percentage of primiparous cows and cows with poorer BCS having incomplete luteal regression at the time of AI
64 ΠΠ‘ΠΠ’ Π½Π° ΡΠΎΡΠ°ΠΊΡ-Π²ΠΈΡΡΡΠ΅Π»Π½Π° Π±ΡΠΎΠ½Ρ ΠΎΡΠΊΠΎΠΏΠΈΡΠ°
ΠΠΎΠΌΠΏΡΡΡeΡΠΈΠ·ΠΈΡΠ°Π½Π° ΡΠΎΠΌΠΎΠ³ΡΠ°ΡΠΈΡΠ° βΠΠ’ ΡΠΊΠ΅Π½Π΅Ρ
-Godfrey N. Hounsfield,EMI,1972
(ΠΏΡΠ²ΠΈΠΎΡ ΠΊΠ»ΠΈΠ½ΠΈΡΠΊΠΈ ΡΠΏΠΎΡΡΠ΅Π±Π»ΠΈΠ² ΠΠ’ ΡΠΊΠ΅Π½Π΅Ρ)
(ΠΠΎΠ±Π΅Π»ΠΎΠ²Π° Π½Π°Π³ΡΠ°Π΄Π° Π²ΠΎ ΠΎΠ±Π»Π°ΡΡΠ° Π½Π° ΡΠΈΠ·ΠΈΠΊΠ°ΡΠ° ΠΈ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½Π°ΡΠ°, 1979)
-1979-1993 -4 Π³Π΅Π½Π΅ΡΠ°ΡΠΈΠΈ Π½Π° Π΅Π΄Π½ΠΎΠΏΡΠ΅ΡΠ΅ΡΠ½ΠΈ (singleslice) ΠΠ’ ΡΠΊΠ΅Π½Π΅ΡΠΈ
-1994-1999 -ΡΠΏΠΈΡΠ°Π»Π½ΠΈ ΠΠ’ ΡΠΊΠ΅Π½Π΅ΡΠΈ
-2000 -ΠΏΠΎΠ²Π΅ΡΠ΅ΡΠ΅Π΄Π½ΠΈ (multislice) ΡΠΏΠΈΡΠ°Π»Π½ΠΈ ΠΠ’ ΡΠΊΠ΅Π½Π΅ΡΠΈ
(ΡΠΎ ΠΏΠΎ 2,4,8,16,32 ΡΠ΅Π΄ΠΎΠ²ΠΈ Π΄Π΅ΡΠ΅ΠΊΡΠΎΡΠΈ)
-2005 -64ΠΠ‘ΠΠ’-ΡΠΊΠ΅Π½Π΅
64 MSCT diagnostic
Characteristics: 64 rows of detectors0.625 mm; fast scanning; reduction of respiratory artifacts; continually transport of the patient through the gantry; helical form of the X-ray beam; continually summation of the primary data of the entire region of interests; no gaps; better spatial & temporal resolution;fast primary reconstruction; fast secondary reconstruction; data post processing from 2D to 3D (axial, sagittal, coronal); MPR (multiplanar) retrospective reconstruction (different width); endoluminal exploration; color visualization
ΠΠΈΡΠ°Π³Π½ΠΎΡΡΠΈΠΊΠ° ΠΈ ΡΡΠ΅ΡΠΌΠ°Π½ Π½Π° CCSVI
ΠΡΠ»ΡΠΈΠΏΠ½Π° ΡΠΊΠ»Π΅ΡΠΎΠ·Π° ΠΈ CCSVI: CCSVI - ΡΠΈΠ½Π΄ΡΠΎΠΌ ΠΏΡΠΈΡΡΡΠ΅Π½ ΠΊΠ°Ρ ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΈ ΡΠΎ ΠΠ‘ ΠΊΠΎΡ ΡΠ΅ ΠΊΠ°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΠΈΡΠ° ΡΠΎ ΠΌΡΠ»ΡΠΈΠΏΠ½ΠΈ ΡΡΠ΅Π½ΠΎΠ·ΠΈ Π½Π° VJI +/- v.Azygos, Π³Π»Π°Π²Π½ΠΈΡΠ΅ Π΄ΡΠ΅Π½Π°ΠΆΠ½ΠΈ ΠΊΠ°Π½Π°Π»ΠΈ Π½Π° ΠΌΠΎΠ·ΠΎΠΊΠΎΡ ΠΈ ΡΠ±Π΅ΡΠ½ΠΈΠΎΡ ΠΌΠΎΠ·ΠΎΠΊ; ΠΠ½ΡΡΡΠΈΡΠΈΠ΅Π½ΡΠ½Π° Π΄ΡΠ΅Π½Π°ΠΆΠ° Π½Π° Π³ΠΎΠ»Π΅ΠΌΠΈΠΎΡ ΠΌΠΎΠ·ΠΎΠΊ ΠΈ ΡΠ±Π΅ΡΠ½ΠΈΠΎΡ ΠΌΠΎΠ·ΠΎΠΊ; ΠΠ΅Π½ΡΠΊΠ° Ρ
ΠΈΠΏΠ΅ΡΡΠ΅Π½Π·ΠΈΡΠ°; Π₯ΠΈΠΏΠΎΠΊΡΠΈΡΠ°; ΠΠ°ΡΡΡΠ΅Π½Π° BBB (blood brain barier); Π’Π°Π»ΠΎΠΆΠ΅ΡΠ΅ Π½Π° ΠΆΠ΅Π»Π΅Π·ΠΎ (ΡΠ΅ΡΠΈΡΠΈΠ½); ΠΠ½ΡΠ»Π°ΠΌΠ°ΡΠΎΡΠ½Π° ΡΠ΅Π°ΠΊΡΠΈΡΠ° (ΠΏΠ΅ΡΠΈΠ²Π΅Π½ΠΎΠ·Π½ΠΎ; ΠΠ²ΡΠΎΠΈΠΌΡΠ½ ΠΎΠ΄Π³ΠΎΠ²ΠΎΡ; ΠΠ΅ΠΌΠΈΠ΅Π»ΠΈΠ½ΠΈΠ·Π°ΡΠΈΡΠ°
ΠΠ’ Π½Π° ΡΡΡΠ΅Π²ΠΈ Π·Π°Π±ΠΎΠ»ΡΠ²Π°ΡΠ°
*ΠΡΠ΅Π΄Π½ΠΎΡΡ Π²ΠΎ ΠΎΠ΄Π½ΠΎΡ Π½Π° ΠΊΠΎΠ½Π²Π΅Π½ΡΠΈΠΎΠ½Π°Π»Π½Π° Π°Π½Π³ΠΈΠΎΠ³ΡΠ°ΡΠΈΡΠ°: ΠΠ΄Π½ΠΎΡΡΠ°Π²Π΅Π½ ΠΈ Π±ΡΠ· Π½Π°ΡΠΈΠ½ ΡΠΎ Π³ΠΎΠ»Π΅ΠΌΠ° Π΄ΠΈΡΠ°Π³Π½ΠΎΡΡΠΈΡΠΊΠ° ΠΏΡΠ΅ΡΠΈΠ·Π½ΠΎΡΡ;
Π‘Π΅ ΠΈΠ·Π²Π΅Π΄ΡΠ²Π° Π²ΠΎ ΠΊΠΎΠ½ΡΠΎΡΠ½ΠΈ ΡΡΠ»ΠΎΠ²ΠΈ Π·Π° ΠΏΠ°ΡΠΈΠ΅Π½ΡΠΎΡ;
ΠΡΠ°ΡΠΊΠΎ Π²ΡΠ΅ΠΌΠ΅ Π½Π° ΡΡΠ°Π΅ΡΠ΅ Π½Π° ΠΏΡΠ΅Π³Π»Π΅Π΄;
Π‘Π΅ Π½Π°ΠΌΠ°Π»ΡΠ²Π° Π±ΡΠΎΡΠΎΡ Π½Π° ΠΊΠ»Π°ΡΠΈΡΠ½ΠΈ ΠΈΠ½Π²Π°Π·ΠΈΠ²Π½ΠΈ Π°Π½Π³ΠΈΠΎΠ³ΡΠ°ΡΠΈΠΈ.
*ΠΠ΅Π΄ΠΎΡΡΠ°ΡΠΎΡΠΈ Π²ΠΎ ΠΎΠ΄Π½ΠΎΡ Π½Π° ΠΊΠΎΡΠΎΠ½Π°ΡΠΎΠ³ΡΠ°ΡΠΈΡΠ°:
ΠΠΎΠ³ΠΎΠ»Π΅ΠΌΠ° Π΄ΠΎΠ·Π° Π½Π° Π·ΡΠ°ΡΠ΅ΡΠ΅; ΠΠΎΠ»Π³ΠΎΡΡΠ°Π΅Π½ ΠΏΠΎΡΡΠΏΡΠΎΡΠ΅ΡΠΈΠ½Π³ Π½Π° ΠΏΠΎΠ΄Π°ΡΠΎΡΠΈ; ΠΡΠ΅Π³Π»Π΅Π΄ΠΎΡ Π½Π΅ ΠΌΠΎΠΆΠ΅ Π΄Π° ΡΠ΅ ΠΏΠΎΠ²ΡΠΎΡΠΈ Π²ΠΎ ΠΈΡΡΠΈ Π°ΠΊΡ;
ΠΠΎΡΠ»Π°Π±Π° Π²ΠΈΠ·ΡΠ΅Π»ΠΈΠ·Π°ΡΠΈΡΠ° Π½Π° ΠΊΠΎΠ»Π°ΡΠ΅ΡΠ°Π»Π½Π° ΡΠΈΡΠΊΡΠ»Π°ΡΠΈΡΠ°;
ΠΠΎΠ²Π° ΠΌΠ΅ΡΠΎΠ΄Π° ΠΏΠΎΠ±Π°ΡΡΠ²Π° Π΄ΠΎΠ»Π³ΠΎΡΡΠ°ΡΠ½Π° ΡΠΎΠΎΠ΄Π²Π΅ΡΠ½Π° Π΅Π΄ΡΠΊΠ°ΡΠΈΡΠ°
64-Π‘Π»ΠΎΡΠ½Π° ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠΈΠ·ΠΈΡΠ°Π½Π° ΡΠΎΠΌΠΎΠ³ΡΠ°Ρija- Π΄ΠΈΡΠ°Π³Π½ΠΎΡΡΠΈΠΊΠ° Π½Π° ΠΊΠ°ΡΠΎΡΠΈΠ΄Π½Π° Π±ΠΎΠ»Π΅ΡΡ
64 Π‘Π»ΠΎΡΠ½Π° ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠΈΠ·ΠΈΡΠ°Π½Π° ΡΠΎΠΌΠΎΠ³ΡΠ°Ρija;64 ΠΠ’ Π°Π½Π³ΠΈΠΎΠ³ΡΠ°ΡΠΈΡΠ°; Π‘ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π° Π½Π΅ΠΈΠ½Π²Π°Π·ΠΈΠ²Π½Π° ΠΌΠ΅ΡΠΎΠ΄Π° Π·Π° ΠΏΡΠ΅Π³Π»Π΅Π΄ Π½Π° ΠΊΠ°ΡΠΎΡΠΈΠ΄Π½ΠΈΡΠ΅ ΠΊΡΠ²Π½ΠΈ ΡΠ°Π΄ΠΎΠ²ΠΈ; ΠΠ½Π΄ΠΈΠΊΠ°ΡΠΈΠΈ; Π¦Π΅ΡΠ΅Π±ΡΠ°Π»Π½Π° ΠΏΠ΅ΡΡΡΠ·ΠΈΡΠ°; ΠΠ΅ΡΠ΅ΠΊΡΠΈΡΠ° Π½Π° Π°Π½Π΅Π²ΡΠΈΠ·ΠΌΠΈ
Π‘ΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π° 64-ΡΠ»ΠΎΠ½Π° ΠΊΠΎΠΌΡΡΡΠ΅ΡΠΈΠ·ΠΈΡΠ°Π½Π° ΡΠΎΠΌΠΎΠ³ΡΠ°ΡΠΈΡΠ° Π½Π° ΠΊΡΠ²Π½ΠΈ ΡΠ°Π΄ΠΎΠ²ΠΈ
64 ΡΠ»ΠΎΡΠ½Π° ΠΊΠΎΠΌΠΏΡΡΡΠ΅ΡΠΈΠ·ΠΈΡΠ°Π½Π° ΡΠΎΠΌΠΎΠ³ΡΠ°ΡΠΈΡΠ°:
-Π’Π΅Π½ΠΊΠΈ ΠΏΡΠ΅ΡΠ΅ΡΠΈ Π½Π° ΡΠ½ΠΈΠΌΠ΅Π½Π°ΡΠ° ΡΠ΅Π³ΠΈΡΠ° -0,625 ΠΌΠΌ, -Π΄Π΅ΡΠ΅ΠΊΡΠΈΡΠ° Π½Π° ΠΌΠ°Π»ΠΈ Π»Π΅Π·ΠΈΠΈ
-ΠΠΎΠ»Π΅ΠΌΠ° Π±ΡΠ·ΠΈΠ½Π° Π½Π° ΡΠΊΠ΅Π½ΠΈΡΠ°ΡΠ΅, ΠΊΡΠ°ΡΠΊΠΎ ΡΡΠ°Π΅ΡΠ΅ Π½Π° ΠΏΡΠ΅Π³Π»Π΅Π΄ΠΎΡ
-ΠΠ²Π°Π»ΠΈΡΠ΅ΡΠ½Π° Π²ΠΈΠ·ΡΠ΅Π»ΠΈΠ·Π°ΡΠΈΡΠ° Π²ΠΎ ΡΠΈΡΠ΅ ΡΠ°ΠΌΠ½ΠΈΠ½ΠΈ (ΡΠ°Π³ΠΈΡΠ°Π»Π½Π°, ΡΡΠ°Π½ΡΠ²Π΅ΡΠ·Π°Π»Π½Π°, ΠΊΠΎΡΠΎΠ½Π°ΡΠ½Π°)
-KΠΎΠ»ΠΎΡΠ½Π° 3Π Π²ΠΈΠ·ΡΠ΅Π»ΠΈΠ·Π°ΡΠΈΡΠ°
-ΠΠΠ ΡΠ»Π΅Π΄Π΅ΡΠ΅
-Π‘ΠΎΡΡΠ²Π΅ΡΡΠΊΠΈ ΠΏΠ°ΠΊΠ΅ΡΠΈ Π·Π° ΠΏΠΎΡΡΠΏΡΠΎΡΠ΅ΡΠΈΡΠ°ΡΠ΅ ΠΈ 3Π ΡΠ΅ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΈ
-ΠΠ½Π΄ΠΎΠ»ΡΠΌΠΈΠ½Π°Π»Π½Π° Π΅ΠΊΡΠΏΠ»ΠΎΡΠ°ΡΠΈΡ
Π‘ΠΈΠΌΠΏΡΠΎΠΌΠ°ΡΡΠΊΠ° Π³Π»Π°Π²ΠΎΠ±ΠΎΠ»ΠΊΠ° ΠΊΠ°Ρ ΠΌΠΎΠ·ΠΎΡΠ½ΠΈ ΠΌΠ΅ΡΠ°ΡΡΠ°Π·ΠΈ
ΠΠΎ ΡΡΡΠ΄ΠΎΡ Π΅ ΠΏΡΠ΅Π·Π΅Π½ΡΠΈΡΠ°Π½ ΡΠ»ΡΡΠ°Ρ ΡΠΎ ΡΠΈΠΌΠΏΡΠΎΠΌΠ°ΡΡΠΊΠ° Π³Π»Π°Π²ΠΎΠ±ΠΎΠ»ΠΊΠ°, Π±Π΅Π· ΠΏΡΠΏΡΠ°ΡΠ½ΠΈ Π½Π΅Π²ΡΠΎΠ»ΠΎΡΠΊΠΈ ΠΈΡΠΏΠ°Π΄ΠΈ, ΠΊΠ°Π΄Π΅ Π½Π° ΠΠ’ ΡΠΊΠ΅Π½ΠΎΠ²ΠΈΡΠ΅ Π½Π° ΠΌΠΎΠ·ΠΎΡΠ½ΠΈΠΎΡ ΠΏΠ°ΡΠ΅Π½Ρ
ΠΈΠΌ ΡΠ΅ Π΄Π΅ΡΠ΅ΠΊΡΠΈΡΠ°Π°Ρ Π½Π΅ΠΊΠΎΠ»ΠΊΡ ΡΠ°Π·Π»ΠΈΡΠ½ΠΈ ΠΏΠΎ Π³ΠΎΠ»Π΅ΠΌΠΈΠ½Π° ΠΠ‘ Π΄Π΅ΠΏΠΎΠ·ΠΈΡΠΈ, ΡΠΎ Π»Π΅ΡΠ½ΠΎ ΠΈΠ·Π±ΡΡΠΊΡΠ²Π°ΡΠ΅ Π½Π° ΠΌΠ΅Π΄ΠΈΡΠ°Π»Π½Π°ΡΠ° Π»ΠΈΠ½ΠΈΡΠ° ΠΊΠΎΠ½ ΠΊΠΎΠ½ΡΡΠ°Π»Π°ΡΠ΅ΡΠ°Π»Π½ΠΎ