Results were compared with other accepted techniques. Phantoms and volunteers were imaged at different resolutions on a 3 Tesla scanner. The scan time was reduced by almost half when the repetition time was modified using a predesigned smooth function. The total scan time is directly proportional to the number of slices to be acquired. This technique makes it possible to image a volume of thin contiguous slices with high resolution and accuracy using a simple fitting procedure and is particularly useful for imaging long T1 species such as CSF. The 3D b-SSFP acquisition after an initial inversion pulse was followed by a variable repetition time. Two modifications to the Look-Locker technique were made to realize high resolution imaging in a clinically reasonable scan time. This is achieved by use of a three-dimensional (3D) balanced steady-state free precession (b-SSFP) acquisition (for high signal-to-noise and resolution) along with variable repetition time to allow effective full recovery of longitudinal magnetization. To demonstrate a modification of the Look-Locker (LL) technique that enables rapid high resolution T1 mapping over the physiologic range of intracranial T1 values, ranging from white matter to cerebrospinal fluid (CSF). Canvas ( root, width = 600, height = 250 ) canvas. grid ( column = 1, row = 4 ) canvas = tk. Button ( root, text = "Browse file", command = lambda : open_file (), width = "15", height = "2" ) browse_btn. showerror ( "Failed", "Unable to encrypt file" ) #Creating "Browse file" button using tk.Buttonīrowse_btn = tk. showinfo ( "Success", "File encrypted successfully" ) else : messagebox. delete ( 0, 'end' ) #Message box to show success message get ()) encryptedFile = FileName + "_Encrypted.pdf" result_pdf = open ( encryptedFile, 'wb' ) pdf_writer. PdfFileWriter () for page_num in range ( pdf_reader. PdfFileReader ( pdf_file ) pdf_writer = PyPDF2. split ( "." ) if pdf_file is not None : pdf_reader = PyPDF2. grid ( column = 1, row = 2 ) def open_file (): pdf_file = askopenfile ( parent = root, mode = "rb", title = "choose a file", filetypes = ) FileName = file. Entry ( root, show = "*", width = 15 ) password. grid ( columnspan = 3, column = 0, row = 1 ) #Creating a input field for password Label ( root, text = "Enter a password and select a pdf to encrypt \n " ) instructions.
grid ( column = 1, row = 0 ) #instructions
open ( '/Users/sunilaleti/Desktop/logo.png' ) logo = ImageTk. Canvas ( root, width = 600, height = 300 ) canvas. Import tkinter as tk from tkinter import messagebox import PyPDF2 from PIL import Image, ImageTk from tkinter.filedialog import askopenfile root = tk.
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